One of the first questions every builder faces when shopping for a genuine NARDI or MOMO wheel is deceptively simple: what size? Diameter and dish depth change how your car feels the moment you touch the rim — steering weight, cabin room, seating position, even the driving character of the whole car. Get it right and the car feels transformed. Get it wrong and you're back on the marketplace six months later. Here's how to choose with confidence.
Understanding diameter: the π notation
NARDI measures its wheels in centimeters and marks them with the π symbol, so a "33π" is a 330mm wheel, "35π" is 350mm, and "36π" is 360mm. MOMO and most other brands simply state the figure in millimeters. Diameter is measured straight across the outer rim, and even 20–30mm makes a surprisingly large difference in feel.
Smaller (330–340mm): quicker, sportier, more effort
A smaller wheel means less leverage, so the steering feels quicker and more direct — small inputs translate to more response, which drivers who push hard on track or in the corners tend to love. The trade-off is effort: with less leverage you work harder, and on a car without power steering a 330mm wheel can feel heavy at parking speeds. If your build is focused on spirited driving and you have power steering (or strong forearms), a 330mm NARDI Classic or a flat, sporty design like the NARDI Challenge 340mm is a fantastic match.
Larger (350–360mm): comfort, leverage, cruising
A larger wheel gives you more leverage, making the steering lighter and easier to manage. This is the sweet spot for cars without power steering, for longer drives, and for anyone who wants a more relaxed, classic feel. The 360mm NARDI Classic is the timeless cruiser size — it's the look most people picture when they think "vintage JDM wood wheel." If your priority is comfort and old-school character over razor-sharp response, size up.
Dish depth: how far the wheel sits from the dash
Dish (or "depth") describes how far the rim is pulled back toward the driver from the mounting hub. A flat wheel keeps the rim close to the dash, roughly where a stock wheel sits. A deep-dish wheel pulls the rim several centimeters closer to your chest.
Why does this matter? Seating position. If you run a low, laid-back seat or you've moved the seat rearward for legroom, a deep-dish wheel like the NARDI Classic Deep 35π brings the rim back within comfortable reach so you're not stretching for it. It also delivers that aggressive, arms-bent race-car driving posture many enthusiasts want. A flat wheel, by contrast, preserves stock-like reach and more knee clearance — better if your seat sits close or you're tall and need the room.
Match the wheel to how you drive
- Street & show: A 350–360mm classic wheel balances comfort and that unmistakable JDM presence. Deep dish adds attitude if your seating allows it.
- Track & canyon: A 330–340mm flat or lightly dished wheel gives quicker response and keeps your hands closer to a neutral position.
- No power steering: Lean toward 350mm+ for leverage — your shoulders will thank you in a parking lot.
- Tall drivers / close seat: Flatter dish preserves leg and knee clearance.
Don't forget the hub adapter
Whatever diameter and dish you choose, remember that aftermarket wheels use the universal 6×70mm six-bolt mounting pattern, so you'll need a chassis-specific hub adapter (boss kit) to fit it to your car. We cover exactly which adapter suits your chassis in our hub adapters guide. And because the vintage-wheel market is full of counterfeits, always buy genuine — see how to spot a fake NARDI or MOMO before you shop anywhere.
Still torn between brands? Our NARDI vs MOMO comparison breaks down the feel and heritage of each. When you're ready, every wheel we carry is a genuine import — no reproductions, no guesswork.
Shop genuine JDM parts
- NARDI Classic 36π — the timeless 360mm cruiser size.
- NARDI Classic Deep 35π — 350mm deep-dish for a closer, race-inspired reach.